Saying his "mythic, perfect story" was "one big lie," Lance Armstrong admitted to Oprah that he cheated during most of his famed cycling career and that he bullied people who dared to tell the truth about it.

Meantime, the IOC is urging Lance Armstrong to provide evidence of his drug use to anti-doping bodies in order to "bring an end to this dark episode."

The IOC says it "unreservedly condemns" the actions of Armstrong, who admitted in an interview with Oprah Winfrey that he had doped throughout his cycling career.

The International Olympic Committee calls it "a very sad day for sport," but lessons should be learned to ensure a level playing field for athletes.

The IOC says "we now urge Armstrong to present all the evidence he has to the appropriate anti-doping authorities so that we can bring an end to this dark episode and move forward, stronger and cleaner."

On Thursday, the IOC stripped Armstrong of his bronze medal from the 2000 Sydney Olympics.